Title:
SOUND GENERATING DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/068297
Kind Code:
A1
Abstract:
Provided is a sound generating device, which comprises a basin frame, and a vibration system and a magnetic circuit system provided with a magnetic gap, which are respectively fixed to the basin frame; the vibration system comprises a diaphragm, a dome and an air-permeable separator; the diaphragm is fixed to the basin frame and encloses to form a sound generating inner cavity together with the basin frame and the magnetic circuit system; the diaphragm comprises a vibrating portion, a folding ring portion that bendingly extends from the periphery of the vibrating portion, and a fixing portion that bendingly extends from a side of the folding ring portion away from the vibrating portion; the fixing portion is fixed to the basin frame; the vibrating portion is provided with a first through hole penetrates therethrough, and the first through hole communicates with the sound generating inner cavity; the dome is attached to the vibrating portion, and the dome is provided with a second through hole that penetrates therethrough and that communicates with the first through hole; the air-permeable separator is attached to a side of the dome away from the vibrating portion and completely covers the second through hole, a side of the air-permeable partition close to the dome is recessed to form a leakage groove that communicates with the second through hole, and the leakage groove communicates with the second through hole. Compared with the related technology, the sound generating device of the present invention has good waterproof performance, high reliability and excellent acoustic performance.
Inventors:
MENG YIMING (CN)
ZHANG GUQING (CN)
PANG WEI (CN)
ZHANG GUQING (CN)
PANG WEI (CN)
Application Number:
PCT/CN2019/113420
Publication Date:
April 15, 2021
Filing Date:
October 25, 2019
Export Citation:
Assignee:
AAC ACOUSTIC TECH SHENZHEN CO LTD (CN)
AAC TECHNOLOGIES PTE LTD (SG)
AAC TECHNOLOGIES PTE LTD (SG)
International Classes:
H04R9/02; H04R9/06
Foreign References:
| CN109040906A | 2018-12-18 | |||
| CN208540156U | 2019-02-22 | |||
| CN208285533U | 2018-12-25 | |||
| CN207382567U | 2018-05-18 | |||
| CN107770704A | 2018-03-06 | |||
| US20180081406A1 | 2018-03-22 | |||
| EP3503571A1 | 2019-06-26 |
Attorney, Agent or Firm:
GUANGDONG GUANGHE LAW FIRM (CN)
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